sing-box/experimental/libbox/command_group.go

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package libbox
import (
"encoding/binary"
"io"
"net"
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"time"
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"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-box/common/urltest"
"github.com/sagernet/sing-box/outbound"
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E "github.com/sagernet/sing/common/exceptions"
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"github.com/sagernet/sing/common/rw"
"github.com/sagernet/sing/service"
)
type OutboundGroup struct {
Tag string
Type string
Selectable bool
Selected string
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IsExpand bool
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items []*OutboundGroupItem
}
func (g *OutboundGroup) GetItems() OutboundGroupItemIterator {
return newIterator(g.items)
}
type OutboundGroupIterator interface {
Next() *OutboundGroup
HasNext() bool
}
type OutboundGroupItem struct {
Tag string
Type string
URLTestTime int64
URLTestDelay int32
}
type OutboundGroupItemIterator interface {
Next() *OutboundGroupItem
HasNext() bool
}
func (c *CommandClient) handleGroupConn(conn net.Conn) {
defer conn.Close()
for {
groups, err := readGroups(conn)
if err != nil {
c.handler.Disconnected(err.Error())
return
}
c.handler.WriteGroups(groups)
}
}
func (s *CommandServer) handleGroupConn(conn net.Conn) error {
var interval int64
err := binary.Read(conn, binary.BigEndian, &interval)
if err != nil {
return E.Cause(err, "read interval")
}
ticker := time.NewTicker(time.Duration(interval))
defer ticker.Stop()
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ctx := connKeepAlive(conn)
for {
service := s.service
if service != nil {
err := writeGroups(conn, service)
if err != nil {
return err
}
} else {
err := binary.Write(conn, binary.BigEndian, uint16(0))
if err != nil {
return err
}
}
select {
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case <-ctx.Done():
return ctx.Err()
case <-ticker.C:
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}
select {
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case <-ctx.Done():
return ctx.Err()
case <-s.urlTestUpdate:
}
}
}
func readGroups(reader io.Reader) (OutboundGroupIterator, error) {
var groupLength uint16
err := binary.Read(reader, binary.BigEndian, &groupLength)
if err != nil {
return nil, err
}
groups := make([]*OutboundGroup, 0, groupLength)
for i := 0; i < int(groupLength); i++ {
var group OutboundGroup
group.Tag, err = rw.ReadVString(reader)
if err != nil {
return nil, err
}
group.Type, err = rw.ReadVString(reader)
if err != nil {
return nil, err
}
err = binary.Read(reader, binary.BigEndian, &group.Selectable)
if err != nil {
return nil, err
}
group.Selected, err = rw.ReadVString(reader)
if err != nil {
return nil, err
}
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err = binary.Read(reader, binary.BigEndian, &group.IsExpand)
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if err != nil {
return nil, err
}
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var itemLength uint16
err = binary.Read(reader, binary.BigEndian, &itemLength)
if err != nil {
return nil, err
}
group.items = make([]*OutboundGroupItem, itemLength)
for j := 0; j < int(itemLength); j++ {
var item OutboundGroupItem
item.Tag, err = rw.ReadVString(reader)
if err != nil {
return nil, err
}
item.Type, err = rw.ReadVString(reader)
if err != nil {
return nil, err
}
err = binary.Read(reader, binary.BigEndian, &item.URLTestTime)
if err != nil {
return nil, err
}
err = binary.Read(reader, binary.BigEndian, &item.URLTestDelay)
if err != nil {
return nil, err
}
group.items[j] = &item
}
groups = append(groups, &group)
}
return newIterator(groups), nil
}
func writeGroups(writer io.Writer, boxService *BoxService) error {
historyStorage := service.PtrFromContext[urltest.HistoryStorage](boxService.ctx)
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cacheFile := service.FromContext[adapter.CacheFile](boxService.ctx)
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outbounds := boxService.instance.Router().Outbounds()
var iGroups []adapter.OutboundGroup
for _, it := range outbounds {
if group, isGroup := it.(adapter.OutboundGroup); isGroup {
iGroups = append(iGroups, group)
}
}
var groups []OutboundGroup
for _, iGroup := range iGroups {
var group OutboundGroup
group.Tag = iGroup.Tag()
group.Type = iGroup.Type()
_, group.Selectable = iGroup.(*outbound.Selector)
group.Selected = iGroup.Now()
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if cacheFile != nil {
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if isExpand, loaded := cacheFile.LoadGroupExpand(group.Tag); loaded {
group.IsExpand = isExpand
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}
}
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for _, itemTag := range iGroup.All() {
itemOutbound, isLoaded := boxService.instance.Router().Outbound(itemTag)
if !isLoaded {
continue
}
var item OutboundGroupItem
item.Tag = itemTag
item.Type = itemOutbound.Type()
if history := historyStorage.LoadURLTestHistory(adapter.OutboundTag(itemOutbound)); history != nil {
item.URLTestTime = history.Time.Unix()
item.URLTestDelay = int32(history.Delay)
}
group.items = append(group.items, &item)
}
if len(group.items) < 2 {
continue
}
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groups = append(groups, group)
}
err := binary.Write(writer, binary.BigEndian, uint16(len(groups)))
if err != nil {
return err
}
for _, group := range groups {
err = rw.WriteVString(writer, group.Tag)
if err != nil {
return err
}
err = rw.WriteVString(writer, group.Type)
if err != nil {
return err
}
err = binary.Write(writer, binary.BigEndian, group.Selectable)
if err != nil {
return err
}
err = rw.WriteVString(writer, group.Selected)
if err != nil {
return err
}
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err = binary.Write(writer, binary.BigEndian, group.IsExpand)
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if err != nil {
return err
}
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err = binary.Write(writer, binary.BigEndian, uint16(len(group.items)))
if err != nil {
return err
}
for _, item := range group.items {
err = rw.WriteVString(writer, item.Tag)
if err != nil {
return err
}
err = rw.WriteVString(writer, item.Type)
if err != nil {
return err
}
err = binary.Write(writer, binary.BigEndian, item.URLTestTime)
if err != nil {
return err
}
err = binary.Write(writer, binary.BigEndian, item.URLTestDelay)
if err != nil {
return err
}
}
}
return nil
}
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func (c *CommandClient) SetGroupExpand(groupTag string, isExpand bool) error {
conn, err := c.directConnect()
if err != nil {
return err
}
defer conn.Close()
err = binary.Write(conn, binary.BigEndian, uint8(CommandGroupExpand))
if err != nil {
return err
}
err = rw.WriteVString(conn, groupTag)
if err != nil {
return err
}
err = binary.Write(conn, binary.BigEndian, isExpand)
if err != nil {
return err
}
return readError(conn)
}
func (s *CommandServer) handleSetGroupExpand(conn net.Conn) error {
groupTag, err := rw.ReadVString(conn)
if err != nil {
return err
}
var isExpand bool
err = binary.Read(conn, binary.BigEndian, &isExpand)
if err != nil {
return err
}
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serviceNow := s.service
if serviceNow == nil {
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return writeError(conn, E.New("service not ready"))
}
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cacheFile := service.FromContext[adapter.CacheFile](serviceNow.ctx)
if cacheFile != nil {
err = cacheFile.StoreGroupExpand(groupTag, isExpand)
if err != nil {
return writeError(conn, err)
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}
}
return writeError(conn, nil)
}